thank you all for your answers.
My 25/4 has the exposure numbers, the 38/1.8 don't. But I don't see it so complicate to learn...
Which batteries/adapter are you using for accurate metering on the FT ? MR-9?
Also, for precise focusing, which is better? The plain screen in F? Or the dimmer FT one?
(my other film camera is a CLE, a rangefinder, so I'm not used to focus screens)
And, is the FT screen too distracting for composing vs the plain screen on the F ?
The fact is that I'm finding more FTs in good shape than Fs, so far. And I find a meter useful. But I have to evaluate pros/cons,
like a dimmer viewfinder on the FT, or that the simpler F screen would be less distracting when composing...
P.S.: I use my Pen lenses on the X-E1 (and before that on my E-P2) that's why I have them.
I love them both. They are excellent lenses. The 38/1.8 is well known. The 25/4 less so and it is an amazing lens, very sharp and special.